Shoe pressure device for drills.



PATENTED JAN. 3, 1905.

W. FBTZER.

SHOE PRESSURE DEVIGE FOR DRILLS,

APPLIUATION FILED OUT. 9, 1902.

war-mm UNITED STATES Patented January 3, 1905.

PATENT OFFICE.

SHOE PRESSURE DEVICE FOR DRILLS- SPECIFICATION forming part of Letters Patent No. 779,212, dated January 3, 1905.

Application filed October 9,1902. Serial No. 126,587.

To all whom, it may concern.-

Be it known that I, VVILLIAM FETZER, a citizen of the United States, residing at Middletown,in the county of Butler and State of Ohio, have invented certain new and useful Improvements in Shoe Pressure Devices for Drills; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in drills, and particularly to pressure devices for the shoes thereof.

The object in view is the provision of means for pressing the shoe of the drill into the earth, the pressure being applied at the base of the grain-chute.

A further object is the provision of means for applying pressure at the base of a grainchute for forcing the shoe of a drill into the earth, means being provided for increasing or decreasing such pressure.

With these and other objects in view the invention consists in certain novel constructions,

depressing the same, disclosing one embodiment of the present invention. Fig. 2 repre sents a top plan view of the same. Fig. 3 represents an enlarged detail view of the tension-adjusting means.

Referring to the drawings by numerals, 1 indicates a suitable drag-bar of the two-arm type, 2 the shoe carried thereby, and 3 the grain-chute discharging in the rear of said shoe. Webs 44 extend forwardly from chute 3 at its base and are spaced apart for receiving a lever 5, one end of which is pivotally retained by a suitable bolt or other means 6, the opposite end of said lever being pivotally attached to a coiled spring 7 which springhas its forward end engaging a hook 8, carried by an adjustably-mounted lever 9. The lever 9 is pivotally secured between the arms of drag-bar l by means of a bolt 10, which also retains a clamping-plate 11 upon each side of the lever. The lever 9 is provided with a laterally-projecting lug 12 upon each side, and each plate 11 is formed with a series of notches or apertures 13 for receiving said lugs, whereby the lever 9 may be swung upon its pivot to secure the desired tension of spring 7 and the nut or bolt 10 tightened for clamping the said lever in its given position, the lugs 12 entering the registering apertures 13 and looking said lever against displacement.

A yoke 14 surrounds chute 3 and has its lower end formed integral with or suitably secured to lever 5, and its upper end pivotally carries a link 15, which may be connected with any suitable lifting and depressing mechanism. (Not illustrated.)

In operation the tension of spring 7 is adjusted to the desired degree by means of lever 9, and the link 15 may be depressed to any preferred extent, whereby the upper end of yoke 1 1 will be moved downwardly, swinging lever 5 upon its pivot 6 and expanding spring 7, whereby a cushioned depressing action is imparted to the shoe 2, all of the pressure being exerted at the base of chute 3.

It has heretofore been common to provide an outwardly-projecting flange at the upper end of a grain-chute and to connect spring rods to the drag-bar of the chute and extend said rods on the opposite sides of the chute, so that depression of the rods would depress the shoe carrying the chute and retain the same depressed under spring-pressure, while elevation of the rods would lift the chute by contact of the rods with said annular flange. I propose to obviate the necessity for the use of the said annular flange and for the use of said spring rods by the present improved structure, wherein the yoke 1 1 is employed in such manner that when the same is depressed by depression of link 15 it will cause the depression of the shoe 2 through an extension of the spring 7, whereby the shoe 2 will be retained in its lowered position under springpressure. When it is desired to elevate the shoe 2, the link 15 is lifted, and the lever 5, swinging on its pivot under the action of the spring 7, brings the rear end of the yoke 1 1 into contact with the rear wall of the chute 3, and further elevation of the link 15 will cause the yoke 14 to bite against the wall of chute 3 and elevate the same clear of the ground through engagement of the yoke 14: with the rear wall of the chute 3, of course a portion of the weight being sustained by the pivot 6.

Although I have set forth the details of a specific embodiment of the present invention, yet it will be understood that I shall not consider myself limited thereto, but shall feel at liberty to deviate therefrom to any extent within the spirit and scope of the invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. Inadevice of the class described, the combination with a drag-bar, shoe, and chute, of a lever pivoted at its end to the base of said chute, yielding means engaging the free end of said lever, a yoke fixed to said lever intermediate the length thereof and surrounding said chute, and operating means engaging said yoke.

2. In a device of the class described, the combination with a shoe and chute carried thereby, of a lever connected at its end with the base of said chute, a spring fixed at one end, and, at the other end, connected with said lever, and tilting and depressing means fixed to the lever at an angle thereto and designed to act against the tension of said spring.

3. In adevice of the class described, the combination with a shoe, a drag-bar connected therewith, and a chute carried by said shoe, of a lever connected to said chute, a yoke engaging said lever intermediate the length thereof at an angle thereto and extending past said chute, a spring connecting said lever with said drag-bar, and depressing means connected to said yoke.

4:. In a device of the class described, the combination with adrag-bar, a shoe carried thereby and a grain-chute, of a lever carried by said drag-bar, a spring carried by said lever, means connecting the spring and the chute for exerting a downward pressure on said shoe by said spring, and means for locking said lever in Various adjusted positions.

5. In adevice of the class described, the combination with a drag-bar and a shoe carried thereby, of a plate carried by the drag-bar and formed with a plurality of apertures, a lever carried by said drag-bar. a lug on said lever adapted to engage any one of said apertures for locking the lever in position, and means connected with said lever for exerting a pressure on said chute.

6. In a device of the class described, the combination with a double-arm drag-bar, and chute carried thereby, of a plate carried by each arm of said drag-bar, each plate being provided with a plurality of apertures, a lever pivoted between said plates, means on said lever for engaging the apertures in said plates for locking the lever against movement,

and means connected with said lever for exerting pressure upon said shoe.

7. In a device of the class described, the combination with a drag-bar, shoe and chute, of a lever pivoted at the base of the chute, a yoke connected with said lever at an angle thereto and surroundingsaid chute, means connected with the yoke for depressing the free end thereof for raising the free end of the lever, and a spring fixed at one end and at the other connected with the free end of said lever.

8. In a device of the class described, the cornbination with a drag-bar, shoe and chute, of a lever pivoted at the base of said chute, a spring connecting said lever with said dragbar, a yoke connected to said lever intermediate the length thereof and surrounding the chute, and means engaging the free end of said yoke for moving said lever in an opposite direction to the tension of said spring.

9. In a device of. the class described, the combination with a drag-bar, shoe and chute of depressing-lever fulcrumed at one end upon said chute at the lower end thereof, tension means engaging the free end of said lever and means engaging said lever intermediate its ends and extending at right angles thereto for moving the lever upon its pivot against the action of said tension means.

10. In a device of the class described, the combination with a drag-bar and chute of a plate carried by said drag-bar provided with a plurality of apertures, a lever pivotally connected with said drag-bar, means on said lever for engaging the apertures in the plate and locking the lever against movement, and means connected with said lever for exerting pressure on said shoe.

11. In a device of the character described, the combination with a double-arm drag-bar and chute, of an adjustable lever pivoted between said arms, adjustable locking means for retaining said lever in various adjusted positions, and means connected with the lever having a bearing on the shoe for exerting pressure upon said shoe.

12. In a device of the class described, the combination with a drag-bar, shoe, and chute, of a lever pivoted in front of said chute, a. yoke carried thereby inclosing said chute adapted to move with the lever through an arc of a circle intersecting said chute intermediate the length thereof, whereby said yoke is adapted to have its rear end engage the rear wall of said chute when the yoke is elevated, and means for depressing and elevating said yoke for imparting a corresponding movement to said shoe and chute.

13. In a device of the class described, the

' combination with a drag-bar, shoe,and chute,

of a lever pivotally engaging said drag-bar, a yoke connected wlth an intermediate portion of and extending at right angles to said lever, yielding means normally retaining said angle thereto, yielding means elevating said yoke in a raised position, and means for deyoke, and means for depressing the same. To

pressing the yoke. In testimony whereof I hereunto afliX my 14. In a device of the class described, the signature in presence of tWo Witnesses.

5 combination With adrag-bar, shoe, and chute, WILLIAM FETZER.

of a lever pivoted to the chute, a yoke con- W'itnesses: nected With said leverintermediate the length A. C. FREEZE,

thereof and extending from the same at an g. CHAS. KENT. 

